By comparing this track variation system to the undercarriages with parallel extensions and telescopic extensions, the inverted arrangement of the elements composing them can be seen.
As a matter of fact, in this case the extensions are not fixed to the crawlers, as with the previous carriages, but to the frame, with the sliding seats in the crawlers.
Compared to undercarriages with parallel or telescopic extensions, the H-Frame undercarriages are perfectly symmetrical.
An undercarriage with the sliding seats on the crawlers is considerably more robust, and presents smaller extension strokes. These features make H-frame undercarriages particularly suitable for use with demolition excavators.
By comparing this track variation system to the undercarriages with parallel extensions and telescopic extensions, the inverted arrangement of the elements composing them can be seen.
As a matter of fact, in this case the extensions are not fixed to the crawlers, as with the previous carriages, but to the frame, with the sliding seats in the crawlers.
Compared to undercarriages with parallel or telescopic extensions, the H-Frame undercarriages are perfectly symmetrical.
An undercarriage with the sliding seats on the crawlers is considerably more robust, and presents smaller extension strokes. These features make H-frame undercarriages particularly suitable for use with demolition excavators.
